[BUG] Enable progress bar on Rio terminal

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

Hi, would like to enable OSC 9;4 protocol on Rio terminal

<img width="912" height="602" alt="Image" src="https://github.com/user-attachments/assets/a9fc3744-b0b7-49bd-8fc9-bd0cb0a15537" />

Thank you!

What Should Happen?

Report OSC 9;4 Protocol on Rio

Error Messages/Logs

Steps to Reproduce

just run any command

Claude Model

Sonnet (default)

Is this a regression?

No, this never worked

Last Working Version

_No response_

Claude Code Version

2.1.104 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Other

Additional Information

_No response_